Direct metallization of electrically non-conductive...

Details Direct metallization of electrically non-conductive... Direct metallization of electrically non-conductive...

2007-05-31

2010-10-19

Wong, Edna (Department: 1795)

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Coating predominantly nonmetal substrate

C205S164000, C205S210000

Reexamination Certificate

active

07815785

ABSTRACT:
The present invention relates to an improved method for the direct metallization of non-conductive substrate surfaces, in particular polyimide surfaces, that is characterized by the process steps of etching the substrate surface with an acidic etching solution that contains peroxide; contacting the etched substrate surface with an acidic treatment solution that contains permanganate; activating the treated substrate surface in an acidic activation solution that contains peroxide; contacting the activated substrate surface with an acidic catalytic solution that contains at least a thiophene derivate and at least a sulfonic acid derivate; metallization of the thus treated substrate surface in an acidic galvanic metallization bath.

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Abstract of DE3806884; Sep. 21, 1989.
Abstract of DE4205190; Aug. 26, 1993.
Abstract of DE 10220684; Nov. 20, 2003.

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